Titanium aluminide intermetallic composites

a technology of titanium aluminide and intermetallic composites, which is applied in the field of titanium aluminide intermetallic composites, can solve the problems of increased porosity, inability to fully activate combustion synthesis, and significant detrimental effect on the mechanical properties of the material, and achieves cost-prohibitive tac production for most applications
US20060032558A1Inactive Publication Date: 2006-02-16SAFFIL AUTOMOTIVE
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SAFFIL AUTOMOTIVE
Publication Date
2006-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

An intermetallic composite and method of making an intermetallic composite is disclosed comprising a porous titanate preform of the formula εxTiyOz, where ε represents an element reduceable by molten aluminum to form an aluminate of the formula εiAjOk. Adding aluminum and heating the preform sufficient to melt the aluminum results in formation of a post-combustion intermetallic composite comprising both titanium aluminide and 68 -aluminate.
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Description

FIELD OF THE INVENTION

[0001] This invention relates to improvements in titanium aluminide intermetallic composites, and more particularly to improvements in titanium aluminide intermetallic composites suitable for use in automotive and aerospace applications. BACKGROUND OF THE INVENTION

[0002] The production of titanium aluminide (“TiAl”) intermetallic matrix composites (“IMC”) (or simply Titanium Aluminide Composite “TAC”), has been studied by many academic and commercial organizations in recent years. Intermetallics are understood by those skilled in the art to mean binary alloys with phases in the mid-composition range. For example, binary alloys of titanium and aluminum can comprise the phases TiAl3, TiAl, or Ti3Al, or mixtures of these phases. Of these intermetallic phases, TiAl has relatively good mechanical properties for use as an engineering material, including high stiffness, strength, ductility and temperature resistance. The important crystal phases in an alloy are usua...

Claims

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